Add SetFileSize() IPC for WebSQL.

content/renderer/renderer_blink_platform_impl.h

Index: content/renderer/renderer_blink_platform_impl.h
diff --git a/content/renderer/renderer_blink_platform_impl.h b/content/renderer/renderer_blink_platform_impl.h
index c0847519fc86a5c911fcd5e487acd4c62c73f0aa..f58c7ba0310e7f2ce472e79512993960c574dca6 100644
--- a/content/renderer/renderer_blink_platform_impl.h
+++ b/content/renderer/renderer_blink_platform_impl.h
@@ -91,6 +91,8 @@ class CONTENT_EXPORT RendererBlinkPlatformImpl : public BlinkPlatformImpl {
       const blink::WebString& vfs_file_name);
   virtual long long databaseGetSpaceAvailableForOrigin(
       const blink::WebString& origin_identifier);
+  virtual bool databaseSetFileSize(
+      const blink::WebString& vfs_file_name, long long size);

[michaeln, 2015/04/01 23:43:26]

oh, is it saying to use 'override' here instead of 'virtual' since you're
overriding the BlinkPlatformImpl method?

[Scott Hess - ex-Googler, 2015/04/02 22:52:41]

I think that if it's a Platform method, it's fine, but if it's only in
BlinkPlatformImpl, it's not fine.  The Platform.h change landed, so np at this
point.

   virtual blink::WebString signedPublicKeyAndChallengeString(
       unsigned key_size_index,
       const blink::WebString& challenge,