Add flag to disable mmap in all sql connection in work build

Work Chrome runs in environment without a proper mmap support.
Disable it for all work chrome.

BUG=554269
TBR=shess@chromium.org,vichang@chromium.org

Review URL: https://codereview.chromium.org/1637683003

Cr-Commit-Position: refs/heads/master@{#372179}
(cherry picked from commit 7ce37c1)

Review URL: https://codereview.chromium.org/1649023002 .

Cr-Commit-Position: refs/branch-heads/2623@{#193}
Cr-Branched-From: 92d7753-refs/heads/master@{#369907}

chrome/android/java/src/org/chromium/chrome/browser/ChromeVersionInfo.java

@@ -46,6 +46,13 @@ public static boolean isStableBuild() {
                    ||  ChromeVersionConstants.CHANNEL == ChromeVersionConstants.CHANNEL_WORK;
     }
 
+    /**
+     * @return Whether this build is a work build.
+     */
+    public static boolean isWorkBuild() {
+        return ChromeVersionConstants.CHANNEL == ChromeVersionConstants.CHANNEL_WORK;
+    }
+
     /**
      * @return Whether this is an official (i.e. Google Chrome) build.
      */

chrome/android/java/src/org/chromium/chrome/browser/init/ChromeBrowserInitializer.java

@@ -27,10 +27,12 @@
 import org.chromium.chrome.browser.ChromeApplication;
 import org.chromium.chrome.browser.ChromeStrictMode;
 import org.chromium.chrome.browser.ChromeSwitches;
+import org.chromium.chrome.browser.ChromeVersionInfo;
 import org.chromium.chrome.browser.FileProviderHelper;
 import org.chromium.chrome.browser.device.DeviceClassManager;
 import org.chromium.chrome.browser.services.GoogleServicesManager;
 import org.chromium.chrome.browser.tabmodel.document.DocumentTabModelImpl;
+import org.chromium.chrome.browser.util.FeatureUtilities;
 import org.chromium.content.app.ContentApplication;
 import org.chromium.content.browser.BrowserStartupController;
 import org.chromium.content.browser.DeviceUtils;
@@ -183,6 +185,12 @@ public void handlePostNativeStartup(final boolean isAsync, final BrowserParts de
             throws ProcessInitException {
         assert ThreadUtils.runningOnUiThread() : "Tried to start the browser on the wrong thread";
 
+        // This has to be called to stop mmap in sql connection before any db initialized.
+        // It applies to Work Chrome only as mmap doesn't work properly.
+        if (ChromeVersionInfo.isWorkBuild()) {
+            FeatureUtilities.nativeSetSqlMmapDisabledByDefault();
+        }
+
         final LinkedList<Runnable> initQueue = new LinkedList<Runnable>();
 
         abstract class NativeInitTask implements Runnable {

chrome/android/java/src/org/chromium/chrome/browser/util/FeatureUtilities.java

@@ -173,4 +173,5 @@ public void onCommandLineReset() {
 
     private static native void nativeSetDocumentModeEnabled(boolean enabled);
     private static native void nativeSetCustomTabVisible(boolean visible);
+    public static native void nativeSetSqlMmapDisabledByDefault();
 }

chrome/browser/android/feature_utilities.cc

@@ -6,6 +6,8 @@
 
 #include "jni/FeatureUtilities_jni.h"
 
+#include "sql/connection.h"
+
 namespace {
 bool document_mode_enabled = false;
 bool custom_tab_visible = false;
@@ -39,6 +41,11 @@ static void SetCustomTabVisible(JNIEnv* env,
   custom_tab_visible = visible;
 }
 
+static void SetSqlMmapDisabledByDefault(JNIEnv* env,
+                                     const JavaParamRef<jclass>& clazz) {
+  sql::Connection::set_mmap_disabled_by_default();
+}
+
 bool RegisterFeatureUtilities(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }

sql/connection.cc

@@ -43,6 +43,8 @@ namespace {
 // TODO(shess): Better story on this.  http://crbug.com/56559
 const int kBusyTimeoutSeconds = 1;
 
+bool g_mmap_disabled_default = false;
+
 class ScopedBusyTimeout {
  public:
   explicit ScopedBusyTimeout(sqlite3* db)
@@ -254,6 +256,12 @@ bool Connection::ShouldIgnoreSqliteCompileError(int error) {
       basic_error == SQLITE_CORRUPT;
 }
 
+// static
+void Connection::set_mmap_disabled_by_default() {
+    g_mmap_disabled_default = true;
+}
+
+
 void Connection::ReportDiagnosticInfo(int extended_error, Statement* stmt) {
   AssertIOAllowed();
 
@@ -339,7 +347,7 @@ Connection::Connection()
       needs_rollback_(false),
       in_memory_(false),
       poisoned_(false),
-      mmap_disabled_(false),
+      mmap_disabled_(g_mmap_disabled_default),
       mmap_enabled_(false),
       total_changes_at_last_release_(0),
       stats_histogram_(NULL),

sql/connection.h

@@ -149,9 +149,12 @@ class SQL_EXPORT Connection {
   // other platforms.
   void set_restrict_to_user() { restrict_to_user_ = true; }
 
-  // Call to opt out of memory-mapped file I/O.
+  // Call to opt out of memory-mapped file I/O on per connection basis.
   void set_mmap_disabled() { mmap_disabled_ = true; }
 
+  // Call to opt out of memory-mapped file I/O on all connections.
+  static void set_mmap_disabled_by_default();
+
   // Set an error-handling callback.  On errors, the error number (and
   // statement, if available) will be passed to the callback.
   //