[Android WebView] Synthesize a fake page loading event on page source modification (Re-land)

android_webview/java/src/org/chromium/android_webview/AwWebContentsObserver.java

Index: android_webview/java/src/org/chromium/android_webview/AwWebContentsObserver.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwWebContentsObserver.java b/android_webview/java/src/org/chromium/android_webview/AwWebContentsObserver.java
index c3c381a6bd341a6fe3ed36f069f0ac4c37bbf15c..fde840c2945715bfe32481f347df6cf5cdf3b455 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwWebContentsObserver.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwWebContentsObserver.java
@@ -13,12 +13,17 @@ import org.chromium.net.NetError;
  */
 public class AwWebContentsObserver extends WebContentsObserver {
     private final AwContentsClient mAwContentsClient;
+    private boolean mDidStartProvisionalLoadForFrameFired = false;

[Charlie Reis, 2015/03/03 22:21:01]

nit: Did...Fired sounds strange to me, but I'll defer if it's following an
existing naming convention.  Otherwise, something like
mHasStartedAnyProvisionalLoad might be easier to read.

(Same for the method name.)

[mnaganov (inactive), 2015/03/04 10:30:29]

Yeah. I was so much tired battling with the code that didn't pay much attention
to choosing a good name. Changed to the name you suggested.

 
     public AwWebContentsObserver(WebContents webContents, AwContentsClient awContentsClient) {
         super(webContents);
         mAwContentsClient = awContentsClient;
     }
 
+    boolean getDidStartProvisionalLoadForFrameFired() {
+        return mDidStartProvisionalLoadForFrameFired;
+    }
+
     @Override
     public void didFinishLoad(long frameId, String validatedUrl, boolean isMainFrame) {
         String unreachableWebDataUrl = AwContentsStatics.getUnreachableWebDataUrl();
@@ -67,4 +72,15 @@ public class AwWebContentsObserver extends WebContentsObserver {
     public void didNavigateAnyFrame(String url, String baseUrl, boolean isReload) {
         mAwContentsClient.doUpdateVisitedHistory(url, isReload);
     }
+
+    @Override
+    public void didStartProvisionalLoadForFrame(
+            long frameId,
+            long parentFrameId,
+            boolean isMainFrame,
+            String validatedUrl,
+            boolean isErrorPage,
+            boolean isIframeSrcdoc) {
+        mDidStartProvisionalLoadForFrameFired = true;
+    }
 }