Remove SharedBuffer::unlock() and keep Resource's SharedBuffer always locked

third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp b/third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp
index 9c6aca3117d6cee362021f6b2d0087b8ce3fa668..47b250aa29916e65a25dc0fba36db11aa957e0ce 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp
@@ -128,17 +128,6 @@ static bool prepareResourceBuffer(Resource* cachedResource, bool* hasZeroSize)
         return true;
     }
 
-    if (cachedResource->isPurgeable()) {
-        // If the resource is purgeable then make it unpurgeable to get
-        // get its data. This might fail, in which case we return an
-        // empty String.
-        // FIXME: should we do something else in the case of a purged
-        // resource that informs the user why there is no data in the
-        // inspector?
-        if (!cachedResource->lock())
-            return false;
-    }
-
     *hasZeroSize = false;
     return true;
 }