[WIP][SVG 2/4] Make data URL handling in ResourceFetcher and WebURLLoaderImpl consistent

content/child/blink_platform_impl.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/child/blink_platform_impl.h"
 
 #include <math.h>
 
 #include <vector>
 
@@ skipping 414 matching lines @@
 
 WebString BlinkPlatformImpl::userAgent() {
   CR_DEFINE_STATIC_LOCAL(
       blink::WebString, user_agent,
       (blink::WebString::fromUTF8(GetContentClient()->GetUserAgent())));
   DCHECK(user_agent ==
          blink::WebString::fromUTF8(GetContentClient()->GetUserAgent()));
   return user_agent;
 }
 
-WebData BlinkPlatformImpl::parseDataURL(const WebURL& url,
-                                        WebString& mimetype_out,
-                                        WebString& charset_out) {
+bool BlinkPlatformImpl::parseDataURLIfCanBeHandledLocally(
+    const blink::WebURLRequest& request,
+    WebString& mimetype_out,
+    WebString& charset_out,
+    WebData& data_out) {
+  // |resource_dispatcher_exists| is a workaround for RenderViewImplTest
+  // (https://crbug.com/187500). We set it to |true| when used from Blink.
+  if (!WebURLLoaderImpl::CanHandleDataURLRequestLocally(request, true))
+    return false;
+
   std::string mime_type, char_set, data;
-  if (net::DataURL::Parse(url, &mime_type, &char_set, &data) &&
-      mime_util::IsSupportedMimeType(mime_type)) {
+  if (net::DataURL::Parse(request.url(), &mime_type, &char_set, &data)) {
     mimetype_out = WebString::fromUTF8(mime_type);
     charset_out = WebString::fromUTF8(char_set);
-    return data;
+    data_out = data;
+  } else {
+    data_out = WebData();
   }
-  return WebData();
+  return true;
 }
 
 WebURLError BlinkPlatformImpl::cancelledError(
     const WebURL& unreachableURL) const {
   return CreateWebURLError(unreachableURL, false, net::ERR_ABORTED);
 }
 
 bool BlinkPlatformImpl::isReservedIPAddress(
     const blink::WebString& host) const {
   net::IPAddressNumber address;
@@ skipping 561 matching lines @@
   return WebString::fromUTF8(ui::KeycodeConverter::DomKeyToKeyString(
       static_cast<ui::DomKey>(dom_key)));
 }
 
 int BlinkPlatformImpl::domKeyEnumFromString(const WebString& key_string) {
   return static_cast<int>(
       ui::KeycodeConverter::KeyStringToDomKey(key_string.utf8()));
 }
 
 }  // namespace content