Add a mechanism to pause and resume geolocation requests.

content/public/android/java/src/org/chromium/content/browser/LocationProvider.java

Index: content/public/android/java/src/org/chromium/content/browser/LocationProvider.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/LocationProvider.java b/content/public/android/java/src/org/chromium/content/browser/LocationProvider.java
index afcc17a68e9bf6b0978667fe5526f91e9e334755..46800f38ca20a38a08105b4862a74be6920334c7 100644
--- a/content/public/android/java/src/org/chromium/content/browser/LocationProvider.java
+++ b/content/public/android/java/src/org/chromium/content/browser/LocationProvider.java
@@ -52,16 +52,24 @@ class LocationProvider {
         @Override
         public void onActivityStateChange(int state) {
             if (state == ActivityStatus.PAUSED) {
-                mShouldRunAfterActivityResume |= mIsRunning;
-                unregisterFromLocationUpdates();
+                pauseUpdates();
             } else if (state == ActivityStatus.RESUMED) {
-                assert !mIsRunning;
-                if (mShouldRunAfterActivityResume) {
-                    registerForLocationUpdates();
-                }
+                resumeUpdates();
             }
         }
 
+        private void pauseUpdates() {
+            mShouldRunAfterActivityResume |= mIsRunning;
+            unregisterFromLocationUpdates();
+        }
+
+        private void resumeUpdates() {
+          assert !mIsRunning;
+          if (mShouldRunAfterActivityResume) {
+              registerForLocationUpdates();
+          }
+        }
+
         /**
          * Start listening for location updates.
          * @param gpsEnabled Whether or not we're interested in high accuracy GPS.
@@ -249,6 +257,28 @@ class LocationProvider {
         ThreadUtils.runOnUiThread(task);
     }
 
+    @CalledByNative
+    public void pause() {
+        FutureTask<Void> task = new FutureTask<Void>(new Runnable() {
+            @Override
+            public void run() {
+                mImpl.pauseUpdates();
+            }
+        }, null);
+        ThreadUtils.runOnUiThread(task);
+    }
+
+    @CalledByNative
+    public void resume() {
+        FutureTask<Void> task = new FutureTask<Void>(new Runnable() {
+            @Override
+            public void run() {
+                mImpl.resumeUpdates();
+            }
+        }, null);
+        ThreadUtils.runOnUiThread(task);
+    }
+
     /**
      * Returns true if we are currently listening for location updates, false if not.
      * Must be called only in the UI thread.