[inspector] added Debugger.getPossibleBreakpoints method

src/inspector/v8-debugger-agent-impl.cc

Index: src/inspector/v8-debugger-agent-impl.cc
diff --git a/src/inspector/v8-debugger-agent-impl.cc b/src/inspector/v8-debugger-agent-impl.cc
index f318619b35bf2b37a0696f9af59bef791840af77..8d7d97c7abe00f0e96dc1bc3f21c0ae54d9f09eb 100644
--- a/src/inspector/v8-debugger-agent-impl.cc
+++ b/src/inspector/v8-debugger-agent-impl.cc
@@ -380,6 +380,57 @@ void V8DebuggerAgentImpl::removeBreakpoint(const String16& breakpointId) {
   m_breakpointIdToDebuggerBreakpointIds.erase(breakpointId);
 }
 
+void V8DebuggerAgentImpl::getPossibleBreakpoints(
+    ErrorString* errorString,
+    std::unique_ptr<protocol::Debugger::Location> start,
+    const Maybe<protocol::Debugger::Location>& end,
+    std::unique_ptr<protocol::Array<protocol::Debugger::Location>>* locations) {
+  String16 scriptId = start->getScriptId();
+
+  if (start->getLineNumber() < 0 || start->getColumnNumber(0) < 0) {
+    *errorString = "start.lineNumber and start.columnNumber should be >= 0";
+    return;
+  }
+
+  v8::DebugInterface::Location v8Start(start->getLineNumber(),
+                                       start->getColumnNumber(0));
+  v8::DebugInterface::Location v8End;
+  if (end.isJust()) {
+    if (end.fromJust()->getScriptId() != scriptId) {
+      *errorString = "Locations should contain the same scriptId";
+      return;
+    }
+    int line = end.fromJust()->getLineNumber();
+    int column = end.fromJust()->getColumnNumber(0);
+    if (line < 0 || column < 0) {
+      *errorString = "end.lineNumber and end.columnNumber should be >= 0";
+      return;
+    }
+    v8End = v8::DebugInterface::Location(line, column);
+  }
+  auto it = m_scripts.find(scriptId);
+  if (it == m_scripts.end()) {
+    *errorString = "Script not found";
+    return;
+  }
+
+  std::vector<v8::DebugInterface::Location> v8Locations;
+  if (!it->second->getPossibleBreakpoints(v8Start, v8End, &v8Locations)) {
+    *errorString = "Internal error";
+    return;
+  }
+
+  *locations = protocol::Array<protocol::Debugger::Location>::create();
+  for (size_t i = 0; i < v8Locations.size(); ++i) {
+    (*locations)
+        ->addItem(protocol::Debugger::Location::create()
+                      .setScriptId(scriptId)
+                      .setLineNumber(v8Locations[i].GetLineNumber())
+                      .setColumnNumber(v8Locations[i].GetColumnNumber())
+                      .build());
+  }
+}
+
 void V8DebuggerAgentImpl::continueToLocation(
     ErrorString* errorString,
     std::unique_ptr<protocol::Debugger::Location> location) {
@@ -547,7 +598,7 @@ void V8DebuggerAgentImpl::setScriptSource(
     return;
 
   ScriptsMap::iterator it = m_scripts.find(scriptId);
-  if (it != m_scripts.end()) it->second->setSource(m_isolate, newSource);
+  if (it != m_scripts.end()) it->second->setSource(newSource);
 
   std::unique_ptr<Array<CallFrame>> callFrames = currentCallFrames(errorString);
   if (!callFrames) return;